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| Passiflora ketura S.S. Tillett & J.M. MacDougal, in MacDougal & Tillett, 2022. Illustration by Alba Arbelaez. |
Abstract
Passiflora ketura, a new species of Passiflora (Passifloraceae) endemic to the mountain forests in Amazonas Department, Northern Peru, is described and illustrated from herbarium material. It is compared to similar species and placed in subgenus Decaloba section Decaloba.
Keywords: Chachapoyas, IUCN Red List, Passiflora subgenus Decaloba, Eudicots
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| Passiflora ketura S.S. Tillett & J.M. MacDougal. A. Habit of flowering branch. B. Variations in leaf shape and two nodes with peduncles and stipules. C. Detail of laminar extrafloral nectary glands on abaxial surface of leaf at axil of central and a lateral vein. D. Flower. E. Seed, with remnant of raphe at right side. A, C–D from Cevasco s.n.; B from Woytkowski 7804 (left) and Cevasco s.n. (middle and right); E from Woytkowski 7804. Illustration by Alba Arbelaez. |
Passiflora ketura S.S. Tillett & J.M. MacDougal, sp. nov.
Passiflora ketura is a small vine with bilobed leaves. It belongs to P. subgenus Decaloba supersection Decaloba based on the plicate operculum, transversely grooved seeds, variegated leaves, and to section Decaloba based on the presence of laminar extrafloral nectaries in rows between the main veins and by the verrucose or rugulose ridges on the seeds. It differs from the similar P. indecora by its narrow bracts (0.3–0.7 vs. 2–8 mm wide), and from the similar P. santos-llatasii by its smaller flowers (sepals 11–14 vs. 18–20 mm long) and smaller fruits (ca. 10 mm vs. ca. 40 mm long).
Etymology. The name is derived from the Greek ketos, whale, and ura, tail, referring to the distinctive bilobed shape of the leaf that resembles the tail fluke of a cetacean.
John M. MacDougal and Stephen S. Tillett. 2022. Passiflora ketura, A New Species of Passiflora Section Decaloba (Passifloraceae) from Peru. Phytotaxa. 556(1); 1-7. DOI: 10.11646/phytotaxa.556.1.1
RESUMEN: Passiflora ketura, una nueva especie de Passiflora (Passifloraceae), endémica de los bosques de montaña en el Departamento Amazonas, Norte del Perú, se describe e ilustra de material de herbario. Se compara con especies similares y se propone ubicarla en el subgénero Decaloba sección Decaloba.
Palabrasclave: Chachapoyas, Lista Roja de la IUCN, Passiflora subgénero Decaloba
